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Monthly climate in Flandreau, South Dakota, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Flandreau features a humid continental climate (Dfa).Temperatures typically range between -8 °C (17 °F) and 23 °C (74 °F) through the year, but rarely can drop to -36 °C (-33 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 859 mm (33.8 inches) and receives 94 rainy days on the 1 mm (0.04 inches) threshold annually.Flandreau enjoys an average of 3055 hours of sunshine throughout the year, and daylight varies from 8 hours 55 minutes to 15 hours 25 minutes per day.

Monthly average temperatures in Flandreau, South Dakota, United States §

The warmest months in Flandreau are June, July and August, with daily mean temperatures ranging from 21 to 23 °C (70 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -4 °C (17 - 25 °F) throughout the day. On average each year, Flandreau experiences 72 days above 25 °C (77.0 °F) and 149 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Flandreau, South Dakota, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 9°C
(49°F)		 18°C
(64°F)		 25°C
(77°F)		 29°C
(85°F)		 33°C
(92°F)		 37°C
(98°F)		 35°C
(95°F)		 34°C
(94°F)		 32°C
(89°F)		 29°C
(84°F)		 25°C
(78°F)		 14°C
(58°F)
Mean maximum 7°C
(45°F)		 10°C
(49°F)		 18°C
(65°F)		 25°C
(78°F)		 30°C
(86°F)		 32°C
(89°F)		 33°C
(92°F)		 31°C
(88°F)		 31°C
(88°F)		 27°C
(80°F)		 17°C
(64°F)		 10°C
(50°F)
Average high -3°C
(26°F)		 -3°C
(26°F)		 5°C
(42°F)		 12°C
(53°F)		 19°C
(67°F)		 27°C
(81°F)		 28°C
(83°F)		 26°C
(79°F)		 23°C
(74°F)		 13°C
(56°F)		 6°C
(43°F)		 0°C
(33°F)
Daily mean -8°C
(18°F)		 -8°C
(17°F)		 0°C
(33°F)		 6°C
(43°F)		 14°C
(58°F)		 22°C
(71°F)		 23°C
(74°F)		 21°C
(70°F)		 18°C
(64°F)		 8°C
(47°F)		 1°C
(33°F)		 -4°C
(25°F)
Average low -13°C
(10°F)		 -13°C
(8°F)		 -4°C
(25°F)		 0°C
(33°F)		 9°C
(48°F)		 16°C
(61°F)		 18°C
(64°F)		 16°C
(61°F)		 12°C
(54°F)		 3°C
(38°F)		 -4°C
(25°F)		 -8°C
(17°F)
Mean minimum -26°C
(-15°F)		 -25°C
(-13°F)		 -16°C
(4°F)		 -10°C
(15°F)		 0°C
(33°F)		 10°C
(50°F)		 12°C
(54°F)		 10°C
(50°F)		 4°C
(39°F)		 -7°C
(19°F)		 -14°C
(7°F)		 -21°C
(-5°F)
Minimum -36°C
(-33°F)		 -31°C
(-24°F)		 -28°C
(-18°F)		 -17°C
(2°F)		 -1°C
(30°F)		 6°C
(44°F)		 10°C
(51°F)		 8°C
(46°F)		 2°C
(37°F)		 -14°C
(8°F)		 -17°C
(1°F)		 -26°C
(-14°F)

Compare climate in Flandreau with other places

Compare temperature, precipitation, sunshine, UV index in Flandreau, South Dakota, United States with other places around the world.

Monthly average precipitation in Flandreau, South Dakota, United States §

Flandreau usually has the most precipitation in May, August and September, with an average of 10 rainy days and 114 mm (4.5 inches) of precipitation per month.The driest months in Flandreau are January, February and November. On average, 24 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Flandreau, South Dakota, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 21 (0.8) 24 (0.9) 59 (2.3) 74 (2.9) 118 (4.6) 91 (3.6) 103 (4.1) 114 (4.5) 109 (4.3) 80 (3.1) 28 (1.1) 37 (1.5)
Average precipitation days (≥ 1 mm) 4 5 7 9 13 9 9 10 9 9 6 4

Monthly sunshine hours in Flandreau, South Dakota, United States §

The sunniest months in Flandreau are June, July and August, when the sun shines an average of 11 hours 23 minutes a day.Least sunny months in Flandreau: January, November and December receive an average of 5 hours 56 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Flandreau, South Dakota, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 146 210 231 251 288 350 364 332 257 221 204 195
Mean daily daylight hours 9h 18m 10h 28m 11h 57m 13h 29m 14h 46m 15h 25m 15h 3m 13h 54m 12h 26m 10h 56m 9h 36m 8h 55m

Solar UV radiation in Flandreau, South Dakota, United States §

Flandreau experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Flandreau UV Index data.

Average daily maximum UV levels by month for Flandreau, South Dakota, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 6 8 9 11 10 9 8 5 3 2